For slotted, Phillips, Pozidriv, TORX®, hexagonal head screws.Includes 31 pieces: 29 bits, 1 magnetic quick release bit holder and 1 socket adaptor 1/4".25 mm bits: SL4.5, SL5.5, PH1, PH2 x3, PH3, PH2G x2, PZ1, PZ2 x3, PZ3, T10, T15 x3, T20 x3, T25 x2, T27, T30, HEX3, HEX4, HEX5, HEX6.PH2G bits for use with reduced shaft diameter for drywall construction.For universal use.High performance alloy steel.Zinc phosphate finish.1/4" hex drive DIN 3126 and ISO 1173, style C 6.3.1/4" square socket adaptor, ball type for regular nut driver socket (style C 6.3).Magnetic quick release bit holder with lock in type system (style E 6.3).Small and compact plastic case with belt clip.In a hanging cardboard card